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If the central vacuum tank will not turn OFF even with the switch in the “OFF” position, then the low-voltage wires should be disconnected from the tank. Once this is done, if the tank continues to run and cannot be turned off with the switch, then most likely the relay inside is defective and needs to be replaced (but it could be a defective and/or shorted ON/OFF switch). If with the low-voltage wires disconnected at the vacuum tank, it can be turned off with the internal switch, then either there is a short in the low-voltage wires, or else there is a hose still plugged into an inlet somewhere. ~ TTURAMBAR

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you can test this out by taking a small metal spoon and with the bottom side of the spoon insert it into the vac outlet on the wall. you want to touch the two metal pins inside the vac outlet to test if the unit is the problem or the hose is the problem.

If the unit starts, the hose should have a 3 year warranty on it. I recommend you have your nearest beam dealer check it out.

If the unit does not start, it has a 7 or 10 year warranty, the circuitry should be replaced. Again have your nearest beam dealer check it out.

If there is a switch on your hose, it may be broken. Your system powers on from the inlets via two low voltage wires that run from the inlets to the switch/relay at the power unit. Each inlet has 2 spring loaded pins attached to the low voltage wires. In the photo below you should see these pins at the bottom of the opening, just above the door hinge. The receptacle at the top of the inlet in this photo supplies 110 volts to power your power nozzle. Not all inlets have this option, but if yours does, exercise extreme caution. Your hose must have a completely metal end or if it is a plastic end, it must have a metal band in order to short the 2 low voltage wires together to trigger the switch.
You can manually short the two low voltage pins together by using a metal pipe or needle nose pliers, just touch both pins at the same time. CAUTION: stay away from the 110 volt receptacle if present.If your system powers on with this manual method then it would seem that the problem is in your hose.If your system does not power on; your low voltage wires may be disconnected from the power unit or disconnected somewhere else . It's also possible that you have a bad circuit/controller board in the power unit.

If the switches on the hose will not turn off the vac you have a short in the wiring of the vac pipe system or a defective relay on the circuit board. Plug the vac in again without the hose and disconnect the thin low voltage wiring were it plugs into or screws onto the vac. If the vac continues to run once disconnected from the low voltage circuit you have a defective relay in the vac itself. Some are circuit board mounted , others freestanding. To avoid a service call you can take the tank off the wall and take it to a pro shop or remove the top hosing if you are confident and check out the relay for a replacement part. If the vac stops your issue is in the house. Has any painting been done or any inlets removed lately.. check that area first for a short at the inlet. Go back to any and all inlets and remove them one at a time checking the mounting screws and backing plates for loose wiring which is touching either the metal inner wall plate in the wall or a common screw . Test the vac as you go. If this does not help, you will need to examine the wiring in the house , running along the pipe. Again if anything has been disturbed recently, near the vac, or near any piping that would be your first suspect area. Post back to advise.

Start with this. Unplug the vac to shut off, then disconnect the low voltage wiring at the vac.Plug the vac back in. If the vac still runs you have an internal short on the relay or wiring inside the vac. If the vac stops then the vac and final wiring is OK and the problem is in the wiring in the house.Have you removed any inlets for painting or had any renos done or pictures hung. If so undo what you did last. If inlets were disturbed remove them and look for low voltage vac wires touching metal backing plates in the wall or touching the inlet mounting screws. If you have done a reno or hung pictures you may have pierece the wire for the vac creating a low voltage short which will keep the vac running until removed. I have seen this happen with freshly installed 1/4 round molding along a baseboard

#1 i assume u checked the bag and filter if so equipped?#2 verify the hose is not plugged#3 verify hard plumbing not plugged by taking something metal (quarter) and crossing the 2 little metal nubs at inlet (don't worry it is low voltage u wll not get shocked) it should ****#4 if hard line plugged you may need a second vacuum to reverse floware all outlets not creating suction f so detach vacuum from piping and verify that vacuum is not the problem

If the central vacuum tank will not turn OFF even with the switch in the “OFF” position, then the low-voltage wires should be disconnected from the tank.If the tank continues to run and still will not turn off, then most likely the relay inside is defective (but it could be a defective and/or shorted ON/OFF switch). If with the low-voltage wires disconnected the tank is able to then be turned off with the switch, then there is a short in the low-voltage wires or a hose is plugged into an inlet somewhere. ~ TTURAMBAR

Try to plug the hose in sideways. So the top of the hose is rotated 90 degrees. If the unit turns on then there is something wrong with the hose. It might be a short or it could be a bad switch on the handle. If the unit still wont turn on I would think that maybe the low voltage wire got disconnected from the unit or there is a break in the low voltage wire somewhere along the way. Let me know if you plugging the hose in sideways works.

Central vacs have relays in them, some stand alone, others mount on a circuit board. A stuck relay causes this type of problem. At the unit disconnect the low voltage wires, plug in your unit, does it still come on, if it does then you have a bad relay. If it doesn't then you have a problem somewhere in your low voltage wiring. One of the outlets, the wires may be touching or there is a staple casuing a short.